摘要: 1. select * from emp;2. select empno, ename, job from emp;3. select empno 编号, ename 姓名, job 工作 from emp;4. select job from emp;5. select distinct job ... 阅读全文
posted @ 2015-01-07 17:10 离离¥ 阅读(165) 评论(0) 推荐(0) 编辑